1 /* 2 * Copyright (c) 1980 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef lint 35 char copyright[] = 36 "@(#) Copyright (c) 1980 The Regents of the University of California.\n\ 37 All rights reserved.\n"; 38 #endif /* not lint */ 39 40 #ifndef lint 41 /*static char sccsid[] = "from: @(#)mt.c 5.6 (Berkeley) 6/6/91";*/ 42 static char rcsid[] = "$Id: mt.c,v 1.4 1994/04/05 21:13:55 mycroft Exp $"; 43 #endif /* not lint */ 44 45 /* 46 * mt -- 47 * magnetic tape manipulation program 48 */ 49 #include <sys/types.h> 50 #include <sys/ioctl.h> 51 #include <sys/mtio.h> 52 #include <fcntl.h> 53 #include <stdio.h> 54 #include <stdlib.h> 55 #include <string.h> 56 #include <ctype.h> 57 #include <err.h> 58 59 static void printreg(); 60 static void status(); 61 static void usage(); 62 63 struct commands { 64 char *c_name; 65 int c_code; 66 int c_ronly; 67 } com[] = { 68 { "weof", MTWEOF, 0 }, 69 { "eof", MTWEOF, 0 }, 70 { "fsf", MTFSF, 1 }, 71 { "bsf", MTBSF, 1 }, 72 { "fsr", MTFSR, 1 }, 73 { "bsr", MTBSR, 1 }, 74 { "rewind", MTREW, 1 }, 75 { "offline", MTOFFL, 1 }, 76 { "rewoffl", MTOFFL, 1 }, 77 { "status", MTNOP, 1 }, 78 { "retension", MTRETEN, 1 }, 79 { "erase", MTERASE, 0 }, 80 { "eom", MTEOM, 1 }, 81 { "nbsf", MTNBSF, 1 }, 82 { 0 } 83 }; 84 85 int mtfd; 86 struct mtop mt_com; 87 struct mtget mt_status; 88 char *tape = NULL; 89 90 int 91 main(argc, argv) 92 int argc; 93 char **argv; 94 { 95 register char *cp; 96 register struct commands *comp; 97 int c; 98 99 while ((c = getopt(argc, argv, "f:t:")) != -1) { 100 switch (c) { 101 case 'f': 102 case 't': 103 tape = optarg; 104 break; 105 default: 106 usage(); 107 /* NOTREACHED */ 108 } 109 } 110 argc -= optind; 111 argv += optind; 112 113 if (argc < 1 || argc > 2) { 114 usage(); 115 /* NOTREACHED */ 116 } 117 118 cp = argv[0]; 119 for (comp = com; comp->c_name != NULL; comp++) 120 if (strncmp(cp, comp->c_name, strlen(cp)) == 0) 121 break; 122 if (comp->c_name == NULL) { 123 errx(1, "don't grok \"%s\"", cp); 124 /* NOTREACHED */ 125 } 126 127 if (tape == NULL) { 128 if ((tape = getenv("TAPE")) == NULL) 129 tape = DEFTAPE; 130 } 131 132 if ((mtfd = open(tape, comp->c_ronly ? O_RDONLY : O_RDWR)) < 0) { 133 err(1, "%s", tape); 134 /* NOTREACHED */ 135 } 136 if (comp->c_code != MTNOP) { 137 mt_com.mt_op = comp->c_code; 138 mt_com.mt_count = (argc == 2 ? atoi(argv[1]) : 1); 139 if (mt_com.mt_count < 0) { 140 errx(1, "negative repeat count"); 141 /* NOTREACHED */ 142 } 143 if (ioctl(mtfd, MTIOCTOP, &mt_com) < 0) { 144 err(2, "%s %s %d failed", 145 tape, comp->c_name, mt_com.mt_count); 146 /* NOTREACHED */ 147 } 148 } else { 149 if (ioctl(mtfd, MTIOCGET, (char *)&mt_status) < 0) { 150 err(2, NULL); 151 /* NOTREACHED */ 152 } 153 status(&mt_status); 154 } 155 156 exit(0); 157 } 158 159 #ifdef vax 160 #include <vaxmba/mtreg.h> 161 #include <vaxmba/htreg.h> 162 163 #include <vaxuba/utreg.h> 164 #include <vaxuba/tmreg.h> 165 #undef b_repcnt /* argh */ 166 #include <vaxuba/tsreg.h> 167 #endif 168 169 #ifdef sun 170 #include <sundev/tmreg.h> 171 #include <sundev/arreg.h> 172 #endif 173 174 #ifdef tahoe 175 #include <tahoe/vba/cyreg.h> 176 #endif 177 178 struct tape_desc { 179 short t_type; /* type of magtape device */ 180 char *t_name; /* printing name */ 181 char *t_dsbits; /* "drive status" register */ 182 char *t_erbits; /* "error" register */ 183 } tapes[] = { 184 #ifdef vax 185 { MT_ISTS, "ts11", 0, TSXS0_BITS }, 186 { MT_ISHT, "tm03", HTDS_BITS, HTER_BITS }, 187 { MT_ISTM, "tm11", 0, TMER_BITS }, 188 { MT_ISMT, "tu78", MTDS_BITS, 0 }, 189 { MT_ISUT, "tu45", UTDS_BITS, UTER_BITS }, 190 #endif 191 #ifdef sun 192 { MT_ISCPC, "TapeMaster", TMS_BITS, 0 }, 193 { MT_ISAR, "Archive", ARCH_CTRL_BITS, ARCH_BITS }, 194 #endif 195 #ifdef tahoe 196 { MT_ISCY, "cipher", CYS_BITS, CYCW_BITS }, 197 #endif 198 { 0 } 199 }; 200 201 /* 202 * Interpret the status buffer returned 203 */ 204 static void 205 status(bp) 206 register struct mtget *bp; 207 { 208 register struct tape_desc *mt; 209 210 for (mt = tapes; mt->t_type; mt++) 211 if (mt->t_type == bp->mt_type) 212 break; 213 if (mt->t_type == 0) { 214 printf("unknown tape drive type (%d)\n", bp->mt_type); 215 return; 216 } 217 printf("%s tape drive, residual=%d\n", mt->t_name, bp->mt_resid); 218 printreg("ds", bp->mt_dsreg, mt->t_dsbits); 219 printreg("\ner", bp->mt_erreg, mt->t_erbits); 220 putchar('\n'); 221 } 222 223 /* 224 * Print a register a la the %b format of the kernel's printf 225 */ 226 static void 227 printreg(s, v, bits) 228 char *s; 229 register char *bits; 230 register unsigned short v; 231 { 232 register int i, any = 0; 233 register char c; 234 235 if (bits && *bits == 8) 236 printf("%s=%o", s, v); 237 else 238 printf("%s=%x", s, v); 239 bits++; 240 if (v && bits) { 241 putchar('<'); 242 while (i = *bits++) { 243 if (v & (1 << (i-1))) { 244 if (any) 245 putchar(','); 246 any = 1; 247 for (; (c = *bits) > 32; bits++) 248 putchar(c); 249 } else 250 for (; *bits > 32; bits++) 251 ; 252 } 253 putchar('>'); 254 } 255 } 256 257 static void 258 usage() 259 { 260 fprintf(stderr, "usage: mt [ -f device ] command [ count ]\n"); 261 exit(1); 262 } 263